Firecracker v0.24.3

Changed

• Changed Docker images repository from DockerHub to Amazon ECR.

Fixed

• Snapshot related host files (vm-state, memory, block backing files) are now
  flushed to their backing mediums as part of the CreateSnapshot operation.
• Fixed ballooning API definition by renaming all fields which mentioned "MB"
  to use "MiB" instead.

Firecracker v0.24.2

Fixed

• Fixed the SIGPIPE signal handler so Firecracker no longer exits. The signal is still recorded in metrics and logs.

Firecracker v0.23.3

Fixed

• Fixed the SIGPIPE signal handler so Firecracker no longer exits. The signal
  is still recorded in metrics and logs.

Firecracker v0.22.4

Fixed

• Fixed the reported used bytes for any virtio-block request.
• Fixed all virtio-block read/write operations to valid guest addresses
  with buffer length of 0 to result in no-op.

Firecracker v0.23.2

Fixed

• Fixed off-by-one error in virtio-block descriptor address validation.

Firecracker v0.24.1

Fixed

• Fixed off-by-one error in virtio-block descriptor address validation.

Firecracker v0.22.3

Fixed

• Fixed off-by-one error in virtio-block descriptor address validation.

Firecracker v0.24.0

Added

• Added optional resume_vm field to /snapshot/load API call.
• Added support for block rate limiter PATCH.
• Added devtool test -c|--cpuset-cpus flag for cpus confinement when tests
  run.
• Added devtool test -m|--cpuset-mems flag for memory confinement when tests
  run.
• Added the virtio traditional memory ballooning device.
• Added a mechanism to handle vCPU/VMM errors that result in process termination.
• Added incremental guest memory snapshot support.
• Added aarch64 snapshot support.

Changed

• Change the information provided in DescribeInstance command to provide microVM
  state information (Not started/Running/Paused) instead of whether it's started or not.
• Removed the jailer --extra-args parameter. It was a noop, having been
  replaced by the -- separator for extra arguments.
• Changed the output of the --version command line parameter to include a list
  of supported snapshot data format versions for the firecracker binary.
• Increased the maximum number of virtio devices from 11 to 19.
• Added a new check that prevents creating v0.23 snapshots when more than 11
  devices are attached.
• If the stdout buffer is full and non-blocking, the serial writes no longer block.
  Any new bytes will be lost, until the buffer is freed. The device also logs these
  errors and increments the uart.error_count metric for each lost byte.

Fixed

• Fixed inconsistency in YAML file InstanceInfo definition

Firecracker v0.23.1

Fixed

Fixed inconsistency in YAML file InstanceInfo definition

Firecracker v0.22.2

Fixed

Fixed inconsistency in YAML file InstanceInfo definition